/*
 * Copyright (C) 2011, Pavel Samko <bulldozerbsg@gmail.com>
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the "Pavel Samko" nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
 * OF SUCH DAMAGE.
 */

#ifndef VCMIXER_H
#define VCMIXER_H

#include "VCStd.h"

#define VCMIXERCHANEL_TIME 500 // 0.5s
#define VCMIXERCHANEL_SIZE 3200 // 0.1s
#define VCMIXERNODE_WAIT_SIZE 32000

class VCMixer;
class VCMixerChannel;
class VCMixerNode: public VCIMod
{
	friend class VCMixerChannel;
public:
	VCMixerNode(VCIController & controller, VCMixer & mixer);
	virtual ~VCMixerNode();

	virtual VC_RESULT Push(VC_CMD cmd, void * data_buff, size_t data_size, VC_DATAFORMAT data_format);

private:
	VCMixer & m_mixer;

	bool m_stream_out;
	unsigned long m_timer_in;

	VCBuffFIFO m_buff;
	VCMutex m_buff_mutex;

	char m_channel;
};

class VCMixerChannel: public VCThread
{
	friend class VCMixer;
protected:
	VCMixerChannel(VCMixer & mixer, char channel = 0);
	virtual ~VCMixerChannel();

	void RememberNode(VCMixerNode * node);
	bool ForgetNode(VCMixerNode * node);

	VCMixerNode * NewNode(VCIController & controller);
	void DeleteNode(VCMixerNode * node);

	virtual int Execute(void * data);
	virtual void OnExit(int exitcode);
private:
	bool m_needexit;

	VCMixer & m_mixer;
	char m_channel;

	std::list<VCMixerNode *> m_nodes;
	VCMutex m_nodes_mutex;
};

class VCMixer
{
public:
	VCMixer();
	~VCMixer();

	VCMixerNode * NewNode(VCIController & controller);
	void DeleteNode(VCMixerNode * node);
	void SetChannelNode(VCMixerNode * node, char to_channel);

protected:
	VCMixerChannel * GetChannel(char channel = 0);

private:
	std::map<char, VCMixerChannel *> m_channels;
	VCMutex m_channels_mutex;
};

#endif /* VCMIXER_H */

